Machine Design
The velocity of sliding __________ the distance of the point of contact from the pitch point.

Is directly proportional to
Is inversely proportional to
Does not depend upon
Is equal to cos φ multiplied by

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Machine Design
In worm, gears, pitch lead angle is

None of these
Half the angle between two inclined faces in axial plane
The angle between the tangent to the pitch helix and an element of the cylinder
The angle between the tangent to the pitch helix and the plane of rotation

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